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283 Commits

Author SHA1 Message Date
arsalan.ghassemi bdcda1ca9b Fixed #33309 -- Fixed QuerySet.distinct() crash on mixed case annotation. 2021-11-23 20:43:20 +01:00
Jonny Park 6fa2930573 Refs #24121 -- Added __repr__() to BaseDatabaseWrapper, JoinPromoter, and SQLCompiler. 2021-11-19 07:57:02 +01:00
Hannes Ljungberg 25157033e9 Fixed #33260 -- Fixed crash when chaining QuerySet.exists() after select_for_update(of=()). 2021-11-03 20:08:14 +01:00
David Wobrock dd1fa3a31b Fixed #33018 -- Fixed annotations with empty queryset. 
Thanks Simon Charette for the review and implementation idea.
 2021-09-29 20:23:29 +02:00
Adam Johnson fc91ea1e50 Refs #27624 -- Changed Query.explain_info to namedtuple. 2021-09-17 07:15:12 +02:00
Keryn Knight 5b8ef8aa5b Refs #32946 -- Changed Query.add_filter() to take two arguments. 2021-07-28 09:38:42 +02:00
Nick Pope c35b81b864 Fixed #32951 -- Removed Query.where_class & co. 
Unused since 3caf957ed5.
 2021-07-22 08:49:20 +02:00
Nick Pope 304f6ff46a
Prevented SQLCompiler.execute_sql() from closing cursor twice. 
cursor_iter() helper calls cursor.close() in a finally block.
 2021-07-16 13:11:46 +02:00
Wu Haotian aba9c2de66 Fixed #32226 -- Fixed JSON format of QuerySet.explain() on PostgreSQL. 2021-07-05 09:08:39 +02:00
Simon Charette f3112fde98 Fixed #26430 -- Fixed coalesced aggregation of empty result sets. 
Disable the EmptyResultSet optimization when performing aggregation as
it might interfere with coalescence.
 2021-07-02 06:40:54 +02:00
Hannes Ljungberg 053141d31f Refs #32786 -- Made Query.clear_ordering() not to cause side effects by default. 2021-06-30 08:52:27 +02:00
Hasan Ramezani 8de4ca74ba Fixed #32693 -- Quoted and lowercased generated column aliases. 2021-05-04 07:36:56 +02:00
Mariusz Felisiak 4074f38e1d Refs #32682 -- Fixed QuerySet.delete() crash on querysets with self-referential subqueries on MySQL. 2021-04-27 10:34:47 +02:00
Chris Jerdonek 0461b7a6b6 Fixed #32662 -- Refactored a generator out of SQLCompiler.get_order_by(). 
This also renames the `asc` variable to `default_order`, markes the
`desc` variable as unused, fixes a typo in SQLCompiler.get_order_by()
docstring, and reorders some blocks in SQLCompiler._order_by_pairs().
 2021-04-21 12:35:49 +02:00
Iuri de Silvio 9760e262f8 Fixed #32627 -- Fixed QuerySet.values()/values_list() crash on combined querysets ordered by unannotated columns. 2021-04-12 21:11:40 +02:00
Adam Johnson d9de74141e Fixed #32442 -- Used converters on returning fields from INSERT statements. 2021-04-07 17:10:00 +02:00
Yuri Konotopov 330bc402a8 Fixed #32546 -- Avoided Meta.ordering columns in GROUP BY clauses. 
Follow up to 0ddb4ebf7b.
 2021-03-16 07:58:38 +01:00
David-Wobrock 464a4c0c59 Fixed #31496 -- Fixed QuerySet.values()/values_list() crash on combined querysets ordered by annotations. 2020-11-14 10:22:09 +01:00
Simon Charette c2d4926702 Fixed #31910 -- Fixed crash of GIS aggregations over subqueries. 
Regression was introduced by fff5186 but was due a long standing issue.

AggregateQuery was abusing Query.subquery: bool by stashing its
compiled inner query's SQL for later use in its compiler which made
select_format checks for Query.subquery wrongly assume the provide
query was a subquery.

This patch prevents that from happening by using a dedicated
inner_query attribute which is compiled at a later time by
SQLAggregateCompiler.

Moving the inner query's compilation to SQLAggregateCompiler.compile
had the side effect of addressing a long standing issue with
aggregation subquery pushdown which prevented converters from being
run. This is now fixed as the aggregation_regress adjustments
demonstrate.

Refs #25367.

Thanks Eran Keydar for the report.
 2020-11-04 09:54:58 +01:00
Nick Pope 06c5d3fafc Fixed #32060 -- Added Random database function. 2020-10-02 06:58:03 +02:00
Hasan Ramezani a046bcadbe
Fixed #31916 -- Fixed combined queryset crash when combining with ordered combined querysets. 2020-09-17 08:26:06 +02:00
Simon Charette f6405c0b8e Fixed #31965 -- Adjusted multi-table fast-deletion on MySQL/MariaDB. 
The optimization introduced in 7acef095d7 did not properly handle
deletion involving filters against aggregate annotations.

It initially was surfaced by a MariaDB test failure but misattributed
to an undocumented change in behavior that resulted in the systemic
generation of poorly performing database queries in 5b83bae031.

Thanks Anton Plotkin for the report.

Refs #23576.
 2020-08-31 08:11:28 +02:00
Simon Charette 51297a9232 Fixed #31792 -- Made Exists() reuse QuerySet.exists() optimizations. 
The latter is already optimized to limit the number of results, avoid
selecting unnecessary fields, and drop ordering if possible without
altering the semantic of the query.
 2020-08-13 14:10:36 +02:00
Daniel Hillier 60626162f7 Fixed #31866 -- Fixed locking proxy models in QuerySet.select_for_update(of=()). 2020-08-11 11:55:10 +02:00
Hasan Ramezani 037a624120 Fixed #31657 -- Fixed ordering by attnames of self-referential ForeignKeys. 2020-06-10 11:14:26 +02:00
Laurent Tramoy 2aac176e86 Fixed #31614 -- Fixed aliases ordering by OrderBy() expressions of combined queryset. 2020-05-26 21:14:45 +02:00
Simon Charette 972000420e Fixed #31624 -- Avoided subquery usage on QuerySet.all().delete(). 
Thanks Adam Johnson for the report.

Regression in 7acef095d7.
 2020-05-25 08:14:49 +02:00
Manuel Weitzman a4e6030904 Fixed #30375 -- Added FOR NO KEY UPDATE support to QuerySet.select_for_update() on PostgreSQL. 2020-05-21 10:51:10 +02:00
Mariusz Felisiak 3a941230c8
Fixed #31584 -- Fixed crash when chaining values()/values_list() after Exists() annotation and aggregation on Oracle. 
Oracle requires the EXISTS expression to be wrapped in a CASE WHEN in
the GROUP BY clause.

Regression in efa1908f66.
 2020-05-14 15:07:08 +02:00
Jon Dufresne d6aff369ad Refs #30116 -- Simplified regex match group access with Match.__getitem__(). 
The method has been available since Python 3.6. The shorter syntax is
also marginally faster.
 2020-05-11 12:01:28 +02:00
Adam Johnson 67f9d076cf
Avoided unnecessary recompilation of ordering clause regex in SQLCompiler. 2020-04-22 20:28:01 +02:00
Adam Johnson c06d7c9239 Refs #31403 -- Made SQLInsertCompiler.execute_sql() always return an iterable of rows. 
List of tuples.
 2020-03-31 07:12:11 +02:00
Jon Dufresne 013147fae2 Fixed #31285 -- Fixed inherited Meta.ordering of "-pk". 2020-03-19 12:57:07 +01:00
Abhijeet Viswa 1712a76b9d Fixed #31246 -- Fixed locking models in QuerySet.select_for_update(of=()) for related fields and parent link fields with multi-table inheritance. 
Partly regression in 0107e3d105.
 2020-02-11 20:43:57 +01:00
Nick Pope 335c9c94ac Simplified imports from django.db and django.contrib.gis.db. 2020-02-04 13:20:06 +01:00
Mariusz Felisiak 6b178a3e93
Fixed #31217 -- Made QuerySet.values()/values_list() group by not selected annotations with aggregations used in order_by(). 
Regression in 59b4e99dd0.

Thanks Jon Dufresne for the report and Simon Charette for the review.
 2020-02-03 07:48:11 +01:00
Simon Charette 5a4d7285bd Fixed #31094 -- Included columns referenced by subqueries in GROUP BY on aggregations. 
Thanks Johannes Hoppe for the report.

Regression in fb3f034f1c.

Co-authored-by: Mariusz Felisiak <felisiak.mariusz@gmail.com>
 2019-12-19 10:04:56 +01:00
Mariusz Felisiak 0107e3d105
Fixed #30953 -- Made select_for_update() lock queryset's model when using "self" with multi-table inheritance. 
Thanks Abhijeet Viswa for the report and initial patch.
 2019-12-02 07:57:19 +01:00
Simon Charette 3ca77e2b84 Replaced QueryWrapper single usage with RawSQL. 2019-11-18 10:45:24 +01:00
Simon Charette 7acef095d7 Fixed #23576 -- Implemented multi-alias fast-path deletion in MySQL backend. 
This required moving the entirety of DELETE SQL generation to the
compiler where it should have been in the first place and implementing
a specialized compiler on MySQL/MariaDB.

The MySQL compiler relies on the "DELETE table FROM table JOIN" syntax
for queries spanning over multiple tables.
 2019-10-24 12:24:53 +02:00
Hasan Ramezani 6a75cea76a Fixed #30854 -- Fixed QuerySet.select_related() with multiple FilteredRelations. 2019-10-11 08:10:48 +02:00
Hasan Ramezani e1ae2b0050 Refs #30854 -- Moved local_setter() outside the loop in SQLCompiler.get_related_selections(). 2019-10-11 08:07:07 +02:00
Mariusz Felisiak 01104368ff Refs #29444 -- Removed redundant DatabaseFeatures.can_return_multiple_columns_from_insert. 
Unnecessary since b31e63879e.
 2019-09-24 10:37:22 +02:00
Johannes Hoppe b31e63879e Fixed #29444 -- Allowed returning multiple fields from INSERT statements on Oracle. 2019-09-24 10:22:43 +02:00
Mariusz Felisiak 0ddb4ebf7b Refs #14357 -- Made Meta.ordering not affect GROUP BY queries. 
Per deprecation timeline.
 2019-09-10 12:01:00 +02:00
Vojtech Bocek b1d37fea8f Fixed #28107 -- Added DatabaseFeatures.allows_group_by_selected_pks_on_model() to allow enabling optimization for unmanaged models. 2019-09-09 14:04:46 +02:00
Johannes Hoppe 7254f1138d Refs #29444 -- Allowed returning multiple fields from INSERT statements on PostgreSQL. 
Thanks Florian Apolloner, Tim Graham, Simon Charette, Nick Pope, and
Mariusz Felisiak for reviews.
 2019-09-09 10:51:14 +02:00
Simon Charette fff5186d32 Refs #25367 -- Moved select_format hook to BaseExpression. 
This will expose an intermediary hook for expressions that need special
formatting when used in a SELECT clause.
 2019-08-13 06:48:14 +02:00
Mariusz Felisiak 7a42cfcfdc
Refs #30557 -- Fixed crash of ordering by ptr fields when Meta.ordering contains F() expressions. 
Thanks Can Sarıgöl for the report.

Follow up to 8c5f9906c5.
 2019-07-11 13:40:36 +02:00
Hasan Ramezani 8c5f9906c5 Fixed #30557 -- Fixed crash of ordering by ptr fields when Meta.ordering contains expressions. 2019-07-11 11:24:59 +02:00